The answer is A. They produce food by photosynthesis.
The function of leaves is taken on by stems of such cacti.
Remember, diffusion is when molecules move from an area of HIGH concentration to an area of LOW concentration. Therefore, in this example the molecules on the outside, where the concentration is high, will diffuse to the inside of the circle, where the concentration is low.
1A): Fats are =====> <u>Solid at Room temperature</u>
1B): Oils are =====> Liquid at Room Temperature
2A): Lipids ====> <u>Are a group of organic compounds, that include fats, oils, waxes and related substances. Lipids are composed of carbon and hydrogen, and oxygen, but there is no definite ratio of hydrogen to oxygen atoms lipids as there is in carbohydrates. Simple lipids, which are the most common type, are made up of three fatty acids molecules, and glycerol molecule.</u>
2B): Carbohydrates =====> <u>Are organic compounds composed of carbon, and hydrogen, and oxygen. The proportion of hydrogen atoms to oxygen atoms in carbohydrates is the same as in water; Two hydrogens to one oxygen. There are three basic types of carbohydrates. Monosaccharides, disaccharides, and polysaccharides.</u>
3): <u>A positive control ===> s</u><u>hould give the desired outcome of the experiment, provided that all the reagents and equipment are functioning properly. For example, if your experiment results in the ability of bacteria to grow on a petri plate containing antibiotic, your positive control will be bacteria that are known to carry the appropriate drug resistance marker. Even if none of your experimental bacteria grow, as long as there is growth of the positive control you know that growth was possible. </u>
3B): A Positive Control =====> <u>should be designed to not give the desired outcome of the experiment. In the example above, bacteria which do not carry a drug resistance marker should not be able to grow on a petri plate containing antibiotic. If growth is observed, it is a red flag that something is wrong with the experiment.</u>
Hope that helps!!! : )
The nurse would most likely disagree with the patient. Pap smear is a diagnostic test that screens pre-cancerous or cancerous cells on the cervix, which is the opening of the uterus. It is recommended for women starting from the age 21 to regularly undergo this test, especially when sexually active. For the 49 year-old patient, she needs to undergo Pap smear test every 3 to 5 years. The patient should note that this test is used to track any abnormal cells in the cervix. When they do, early treatment would still be done in the hospital before it becomes even more serious. Hence, whether the patient took Pap smear tests regularly, she would still need the help of the hospital to treat it. It would only differ in the time of admittance.
